3645564427 has 2 divisors, whose sum is σ = 3645564428. Its totient is φ = 3645564426.

The previous prime is 3645564413. The next prime is 3645564449. The reversal of 3645564427 is 7244655463.

3645564427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3645564427 is a prime.

It is not a weakly prime, because it can be changed into another prime (3645564457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822782213 + 1822782214.

It is an arithmetic number, because the mean of its divisors is an integer number (1822782214).

Almost surely, 2^3645564427 is an apocalyptic number.

3645564427 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645564427 is an equidigital number, since it uses as much as digits as its factorization.

3645564427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 46.

The square root of 3645564427 is about 60378.5096454028. The cubic root of 3645564427 is about 1539.0577846658.

The spelling of 3645564427 in words is "three billion, six hundred forty-five million, five hundred sixty-four thousand, four hundred twenty-seven".